That really sucks. The Dell UltraSharp warranty in the US says:
I know it's a pain, but check and see if the same is true for Canada. I believe they'll even pay return shipping and give you advance return.
What revision of the monitor did you get? Was it the A01?
Zero Bright Pixels
Under Dell's Premium Panel Guarantee3, you will receive a replacement UltraSharp monitor should even one bright defective pixel appear on the screen.
I know it's a pain, but check and see if the same is true for Canada. I believe they'll even pay return shipping and give you advance return.
What revision of the monitor did you get? Was it the A01?